Changes in heterosis via intra and interpopulation selection

Detalhes bibliográficos
Autor(a) principal: Júnior, Cláudio Lopes de Souza
Data de Publicação: 2014
Outros Autores: Filho, José Branco de Miranda
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/16287
Resumo: In view of the lack of consistency of empirical results on changes in heterosis through intra and interpopulation selection, the objective of the present work was to study, theoretically, the expected changes in heterosis as a result of those two selection schemes. For that purpose, expressions were obtained in order to explain the changes in gene frequencies through interpopulation selection and changes in heterosis (Δh), as a function of gene frequencies and genotypic e effect, according to Falconer's model. It was demonstrated that Δh ≅ 2(p - r) d(Δp - Δr); also for several combinations of gene frequencies (p and r) of both populations it was showed that Δh has a negative trend for intrapopulation selection and a positive trend for interpopulation selection, for models with either complete dominance or overdominance.
id EMBRAPA-4_d8a0a964f5044b682fc27a431a42e0c6
oai_identifier_str oai:ojs.seer.sct.embrapa.br:article/16287
network_acronym_str EMBRAPA-4
network_name_str Pesquisa Agropecuária Brasileira (Online)
repository_id_str
spelling Changes in heterosis via intra and interpopulation selectionAlterações na heterose via seleção intra e interpopulacionalgene frequencies; genotypic effects; populations; dominance; overdominancefequências gênicas; efeitos genotípicos; populações; dominância; sobredominânciaIn view of the lack of consistency of empirical results on changes in heterosis through intra and interpopulation selection, the objective of the present work was to study, theoretically, the expected changes in heterosis as a result of those two selection schemes. For that purpose, expressions were obtained in order to explain the changes in gene frequencies through interpopulation selection and changes in heterosis (Δh), as a function of gene frequencies and genotypic e effect, according to Falconer's model. It was demonstrated that Δh ≅ 2(p - r) d(Δp - Δr); also for several combinations of gene frequencies (p and r) of both populations it was showed that Δh has a negative trend for intrapopulation selection and a positive trend for interpopulation selection, for models with either complete dominance or overdominance.Em vista de os resultados experimentais sobre a alteração na heterose via seleção intra e interpopulacional não serem consistentes, o objetivo do presente trabalho foi o de estudar, teoricamente, a alteração esperada na heterose pelos dois tipos de seleção. Para isto, foram obtidas as expressões de alteração de frequências gênicas via seleção interpopulacional e de alteração na heterose via seleção (Δh), em função de frequências gênicas e efeitos genotípicos, segundo o modelo de Falconer. Demonstrou- se que: Δh ≅ 2(p - r) d(Δp - Δr). Também para diversas combinações de frequências gênicas de duas populações (p e r) verificou-se que Δh tende a ser negativo para a seleção intrapopulacional e positivo para a seleção interpopulacional, para modelos com dominância completa e sobredominância.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraJúnior, Cláudio Lopes de SouzaFilho, José Branco de Miranda2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/16287Pesquisa Agropecuaria Brasileira; v.20, n.10, out. 1985; 1197-1201Pesquisa Agropecuária Brasileira; v.20, n.10, out. 1985; 1197-12011678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/16287/10482info:eu-repo/semantics/openAccess2014-04-16T19:33:06Zoai:ojs.seer.sct.embrapa.br:article/16287Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T19:33:06Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Changes in heterosis via intra and interpopulation selection
Alterações na heterose via seleção intra e interpopulacional
title Changes in heterosis via intra and interpopulation selection
spellingShingle Changes in heterosis via intra and interpopulation selection
Júnior, Cláudio Lopes de Souza
gene frequencies; genotypic effects; populations; dominance; overdominance
fequências gênicas; efeitos genotípicos; populações; dominância; sobredominância
title_short Changes in heterosis via intra and interpopulation selection
title_full Changes in heterosis via intra and interpopulation selection
title_fullStr Changes in heterosis via intra and interpopulation selection
title_full_unstemmed Changes in heterosis via intra and interpopulation selection
title_sort Changes in heterosis via intra and interpopulation selection
author Júnior, Cláudio Lopes de Souza
author_facet Júnior, Cláudio Lopes de Souza
Filho, José Branco de Miranda
author_role author
author2 Filho, José Branco de Miranda
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Júnior, Cláudio Lopes de Souza
Filho, José Branco de Miranda
dc.subject.por.fl_str_mv gene frequencies; genotypic effects; populations; dominance; overdominance
fequências gênicas; efeitos genotípicos; populações; dominância; sobredominância
topic gene frequencies; genotypic effects; populations; dominance; overdominance
fequências gênicas; efeitos genotípicos; populações; dominância; sobredominância
description In view of the lack of consistency of empirical results on changes in heterosis through intra and interpopulation selection, the objective of the present work was to study, theoretically, the expected changes in heterosis as a result of those two selection schemes. For that purpose, expressions were obtained in order to explain the changes in gene frequencies through interpopulation selection and changes in heterosis (Δh), as a function of gene frequencies and genotypic e effect, according to Falconer's model. It was demonstrated that Δh ≅ 2(p - r) d(Δp - Δr); also for several combinations of gene frequencies (p and r) of both populations it was showed that Δh has a negative trend for intrapopulation selection and a positive trend for interpopulation selection, for models with either complete dominance or overdominance.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-16
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/16287
url https://seer.sct.embrapa.br/index.php/pab/article/view/16287
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/16287/10482
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.20, n.10, out. 1985; 1197-1201
Pesquisa Agropecuária Brasileira; v.20, n.10, out. 1985; 1197-1201
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
_version_ 1793416686990262272

Registros relacionados